Vtronix
7
OPERATION
SYSTEM CHECKOUT
Cooling Checkout
WARNING ! Do not operate in cooling mode when the outdoor temperature is below 50
°
F ( 10
°
C)
otherwise the compressor might be damaged.
1.
Slide mode switch to COOL, O terminal will get energized.
2.
Pressing
Ñ
key
to lower the set point below room temperature. The star symbol is shown on the display.
If flashing, the compressor delay time is not yet expired. If lit steady, the compressor is on and terminal
Y is energized.
3.
Press
D
key until set point is higher than room temperature. The star symbol is removed. The compressor
is off and Y terminal is de-energized.
System Setting
Use mode switch for selecting system operation.
q
Cool : The thermostat controls the cooling
system.
q
Heat : The thermostat controls the heating
system.
q
Off : Both heating and cooling are off.
Fan Setting
Fan switch settings are
On : Fan symbol is indicated on
the display. The fan runs
continuously. Used to improve air
circulation and air quality.
Auto : Fan and Auto symbols are
indicated on the display.
For cooling mode:
The fan starts and stops with
cooling equipment.
For heating mode:
q
If setup switch is at
‘
F
’
position, the fan is
controlled directly by the heating equipment.
q
If setup switch is at
‘
E
’
position, the fan starts
and stop with heating equipment.
Minimum Off Timer
For cooling, when the thermostat
calls for operation while the
minimum off timer is not expired,
the
star symbol keeps flashing.
Temperature Setting
Use
D
or
Ñ
key
to change
temperature setting in a range
of 40 to 99
°
F (or 4 to 37
°
C).
The display shows set point
value flashing for 5 seconds
before returning to the room
temperature.
Back Lighting
( TE86SB )
The thermostat features
a back light that will
illuminate all the time.
The user can easily see
the LCD screen under
dim light situation.
